Skip to main content
ISOCarbon RemovalGeneral Methodologyv2.1

CarbonZero.eco - Williams

ISO-1K48633C61S0 ↗

#15of 52 in ISO

4.3/ 10
Integrity
5.5
Transparency
3.0
Claim Safety
4.5
Documentation
3.5

Audit Analysis

CarbonZero.eco – Williams is a biochar carbon-removal project under the Isometric standard with a 200-year permanence claim, a combined additionality test, and no reported reversal events or material findings. However, the available record consists only of the PDD and a stakeholder consultation document; no verification report, monitoring data, or ERR figures are present, making it impossible to independently confirm the project's claimed removals or the robustness of its project-specific baseline.

Red Flags

  • No verification report or VVB name found in the extracted record; additionality is described as a 'combined' test but independent verification is not confirmed.
  • No ERR figures (claimed or verified) are available, so over-crediting risk cannot be assessed.
  • FPIC was not conducted despite the presence of a grievance mechanism and benefit-sharing description.
  • Leakage is deemed negligible with no quantified deduction or detailed justification in the available documents.
  • Buffer pool percentage is not stated; only a qualitative note that a 'minimum buffer pool contribution is required.'

Credit Vintages

Issuance data not yet available — check back soon.

Risk Indicators

Additionality

Combined test present; VVB verification not confirmed

Permanence

No reversals; buffer pool % not stated

Leakage

Deemed negligible; no quantified deduction

Baseline

Project-specific; no reassessment date

Safeguards

Grievance & benefit sharing present; FPIC not conducted

Double-claim

CORSIA and CCP status not stated

Where to buy

+ Know where to buy this?

Listing multiple projects? Send us a CSV at [email protected].

⚑ Dispute this rating
Analysis ProvenanceScored2026-09-02General Methodology v2.1

Are you the project owner?

Metadata correction (free)

Name, country, marketplace or links incorrect? Let us know.

Does not modify the score.

[email protected]

Pipeline re-run with new documents

Have updated documentation not yet included? You can request a new run of the pipeline with the new inputs.

Submit Documents